OS stands for operating system...back in the day computers ran on like a script that was before dos the script was very basic all you could do is basically type documents and save them....it was like a windows 95 command prompt with no mouse...it was pretty much useless unless you were an IT and knew how to use it properly.
The OS is usually an altered regular OS. Just like in schools, you get an OS without all of the capabilities and administrative powers of a normal PC OS. Hotels OS's usually only let you browse the internet. Hope that helped!
symbian OS
Usually a customized version of Linux.
Mac OS, UNIX, Windows Vista, Symbian OS
iOS is the iPhone's operating system that is used by Apple. It is similar to the Mac OS, and is theoretically more stable than Windows OS.
embeded os works as a firmware and applies the concept of firmaware .
Apple Inc. owns, writes, publishes, and distributes Mac OS X 10.6 "Snow Leopard" (the current version of Mac OS X, as of January 2010), along with every prior version of Mac OS since its introduction in 1984.
Mac OS X is the OS used on Apple's Macintosh computers.
PAAS
Mac OS X is pronounced Mac OS Ten. It follows on from Mac OS 9 which was the last version of what is now known as the classic Mac OS and it saw the introduction of the new UNIX based OS so the Roman numeral X was adopted to mark the change.
Microsoft included the Arial typeface (to avoid paying a licensing fee for Helvetica) with the introduction of Windows 3.1. Apple licensed the Helvetica typeface for use within the Mac OS. Helvetica is now widely used on both operating systems.
UNIX.. Two more OS from MicroSoft - Xenix and MSX-DOS..
The word manufacture is capitalized when it is used at the beginning os a sentence or is part of a name. Examples: Manufacter of automobiles was enhanced by the introduction of the moving assembly line. The Gimley Axe Manufacture Works, Inc.
The version of Windows before 7 was Vista. But there could have been countless other non-windows OS releases before 7, such as ubuntu releases etc.
Unless the disc is damaged and so needs reformatting you can run the Mac OS installer over an existing Mac OS.
Mac OS X (ten)
Apple's Mac OS X is legally only used on Apple Macintosh computers.